CN114283753A - Display device and control method of screen backlight brightness - Google Patents
Display device and control method of screen backlight brightness Download PDFInfo
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- CN114283753A CN114283753A CN202210001276.6A CN202210001276A CN114283753A CN 114283753 A CN114283753 A CN 114283753A CN 202210001276 A CN202210001276 A CN 202210001276A CN 114283753 A CN114283753 A CN 114283753A
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Abstract
The application provides a display device and a control method of screen backlight brightness, and the problem that light sensation measurement data are inaccurate and user experience is poor can be solved to a certain extent. A display device, comprising: a display; the first sensor is used for acquiring ambient light intensity data around the display equipment in a preset time period; a second sensor for detecting a light sensing state of the display device; the controller is used for acquiring ambient light intensity data of the display equipment after the photosensitive state changes and storing the ambient light intensity data in the cache queue; creating ambient light intensity baseline data based on the ambient light intensity data stored in the cache queue, wherein the ambient light intensity baseline data is created according to the ambient light intensity data collected in a preset time period; calling target ambient light intensity data in a cache queue; and controlling and adjusting the backlight brightness of the display equipment when a preset condition is met according to the difference value of the ambient light intensity baseline data and the target ambient light intensity data.
Description
Technical Field
The application relates to the technical field of display equipment, in particular to display equipment and a control method of screen backlight brightness.
Background
With the continuous upgrade of display equipment, many new functions of the current display equipment have emerged in the aspect of display, and a more professional display effect is provided for users. As one of the most intuitive parameters affecting the display effect, the backlight adjustment has been performed by "automatic backlight adjustment" or the like. When the "automatic backlight adjustment" function of the display device is turned on, the display device may automatically adjust the current backlight brightness to the target backlight brightness corresponding to the ambient brightness according to the sensed ambient brightness.
In some application scenarios, the "automatic backlight adjustment" of the display device needs to calculate a proper backlight brightness according to the ambient light intensity obtained by light sensing, and when a set adjustment condition is met, such as falling into a certain brightness interval and lasting for more than x seconds, the backlight adjustment is performed.
However, when the user is close to the display device to operate, if the main indoor light source is behind the user, due to the shielding of the shadow, the data of the light sensation measurement is greatly reduced, the ambient light intensity data acquired by the light sensation is obviously reduced, the display device can reduce the backlight brightness, and for the user to use, when the user starts to operate close to the screen, the screen of the display device is suddenly darkened, so that the user experience is not good.
Disclosure of Invention
In order to solve the above problems, the present application provides a display device and a method for controlling screen backlight brightness.
The embodiment of the application is realized as follows:
a first aspect of an embodiment of the present application provides a display device, including:
a display; a first sensor configured to acquire ambient light intensity data around the display device at a preset time period; a second sensor configured to detect a light sensing state of the display device; a controller configured to: acquiring ambient light intensity data of the display equipment after the photosensitive state changes, and storing the ambient light intensity data in a cache queue; creating ambient light intensity baseline data based on the ambient light intensity data stored in a cache queue, wherein the ambient light intensity baseline data is created according to the ambient light intensity data collected within a preset time period; calling target ambient light intensity data in a cache queue; and controlling and adjusting the backlight brightness of the display equipment when a first preset condition is met according to the difference value of the ambient light intensity baseline data and the target ambient light intensity data.
A second aspect of an embodiment of the present application provides a display apparatus, including:
a display; a first sensor configured to acquire ambient light intensity data around the display device at a preset time period; a second sensor configured to detect a light sensing state of the display device; a controller configured to: acquiring ambient light intensity data of the display equipment after the photosensitive state changes, and storing the ambient light intensity data in a cache queue; calling target ambient light intensity data in a cache queue; calculating the brightness level corresponding to the target environment light intensity data according to the brightness adjusting interval to which the target environment light intensity data belongs; and controlling and adjusting the backlight brightness of the display equipment when a second preset condition is met according to the brightness level.
A third aspect of the embodiments of the present application provides a method for controlling screen backlight brightness, including:
acquiring ambient light intensity data of the display equipment after the photosensitive state changes, and storing the ambient light intensity data in a cache queue; creating ambient light intensity baseline data based on the ambient light intensity data stored in a cache queue, wherein the ambient light intensity baseline data is created according to the ambient light intensity data collected within a preset time period; calling target ambient light intensity data in a cache queue; and controlling and adjusting the backlight brightness of the display equipment when a first preset condition is met according to the difference value of the ambient light intensity baseline data and the target ambient light intensity data.
A fourth aspect of the embodiments of the present application provides a method for controlling screen backlight luminance, including:
acquiring ambient light intensity data of the display equipment after the photosensitive state changes, and storing the ambient light intensity data in a cache queue; calling target ambient light intensity data in a cache queue; calculating the brightness level corresponding to the target environment light intensity data according to the brightness adjusting interval to which the target environment light intensity data belongs; and controlling and adjusting the backlight brightness of the display equipment when a second preset condition is met according to the brightness level.
A fifth aspect of the embodiments of the present application provides a terminal device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor implements the method for controlling the screen backlight brightness in the display device when executing the computer program.
A sixth aspect of embodiments of the present application provides a computer-readable storage medium storing a computer program, which when executed by a processor, implements the method for controlling the brightness of the screen backlight in the display device described above.
The beneficial effect of this application: the method provided in the application processes ambient light intensity data around the display device after the photosensitive state changes, firstly, ambient light intensity baseline data is created based on the ambient light intensity data collected in a preset time period stored in a cache queue, and further, according to the difference value of the ambient light intensity baseline data and the called target ambient light intensity data, when preset conditions are met, the backlight brightness of the display device is controlled and adjusted, wherein the target ambient light intensity data can be selected according to actual photosensitive state changes, so that the backlight brightness adjusting process of the display device is more accurate, the method is suitable for different photosensitive state changes, the use requirements of users are met, and the use experience of the users is improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic diagram of an operation scenario between a display device and a control apparatus according to one or more embodiments of the present application;
fig. 2 is a block diagram of a hardware configuration of a display apparatus 200 according to one or more embodiments of the present application;
fig. 3 is a block diagram of a hardware configuration of the control apparatus 100 according to one or more embodiments of the present application;
fig. 4 is a schematic diagram of a software configuration in a display device 200 according to one or more embodiments of the present application;
FIG. 5 is a schematic illustration of an icon control interface display of an application in a display device 200 according to one or more embodiments of the present application;
FIG. 6 is a schematic diagram illustrating a first sensor arrangement of a display device according to an embodiment of the present disclosure;
FIG. 7 is a diagram illustrating a display device interface display of an automatic backlight mode initiated by an embodiment of the present application;
FIG. 8 is a diagram illustrating a relationship between ambient light brightness and backlight brightness according to an embodiment of the present disclosure;
FIG. 9 is a flowchart illustrating a method for controlling the brightness of the backlight of the screen when a target object is identified according to an embodiment of the present application;
FIG. 10 is a flowchart illustrating a method for controlling the brightness of the backlight of the screen when no target object is identified according to an embodiment of the present application;
FIG. 11 is a flowchart illustrating a method for controlling the brightness of a backlight of a screen according to an embodiment of the present application;
fig. 12 is a flowchart illustrating a method for controlling the brightness of the screen backlight according to another embodiment of the present application.
Detailed Description
To make the objects, embodiments and advantages of the present application clearer, the following description of exemplary embodiments of the present application will clearly and completely describe the exemplary embodiments of the present application with reference to the accompanying drawings in the exemplary embodiments of the present application, and it is to be understood that the described exemplary embodiments are only a part of the embodiments of the present application, and not all of the embodiments.
All other embodiments, which can be derived by a person skilled in the art from the exemplary embodiments described herein without inventive step, are intended to be within the scope of the claims appended hereto. In addition, while the disclosure herein has been presented in terms of one or more exemplary examples, it should be appreciated that aspects of the disclosure may be implemented solely as a complete embodiment. It should be noted that the brief descriptions of the terms in the present application are only for the convenience of understanding the embodiments described below, and are not intended to limit the embodiments of the present application. These terms should be understood in their ordinary and customary meaning unless otherwise indicated.
Fig. 1 is a schematic diagram of an operation scenario between a display device and a control device according to one or more embodiments of the present application, as shown in fig. 1, a user may operate the display device 200 through a mobile terminal 300 and the control device 100. The control apparatus 100 may be a remote controller, and the communication between the remote controller and the display device includes infrared protocol communication, bluetooth protocol communication, wireless or other wired method to control the display device 200. The user may input a user command through a key on a remote controller, voice input, control panel input, etc. to control the display apparatus 200. In some embodiments, mobile terminals, tablets, computers, laptops, and other smart devices may also be used to control the display device 200.
In some embodiments, the mobile terminal 300 may install a software application with the display device 200 to implement connection communication through a network communication protocol for the purpose of one-to-one control operation and data communication. The audio and video contents displayed on the mobile terminal 300 can also be transmitted to the display device 200, so that the display device 200 with the synchronous display function can also perform data communication with the server 400 through multiple communication modes. The display device 200 may be allowed to be communicatively connected through a Local Area Network (LAN), a Wireless Local Area Network (WLAN), and other networks. The server 400 may provide various contents and interactions to the display apparatus 200. The display device 200 may be a liquid crystal display, an OLED display, a projection display device. The display apparatus 200 may additionally provide an intelligent network tv function that provides a computer support function in addition to the broadcast receiving tv function.
Fig. 2 exemplarily shows a block diagram of a configuration of the control apparatus 100 according to an exemplary embodiment. As shown in fig. 2, the control device 100 includes a controller 110, a communication interface 130, a user input/output interface 140, a memory, and a power supply. The control apparatus 100 may receive an input operation instruction from a user and convert the operation instruction into an instruction recognizable and responsive by the display device 200, serving as an interaction intermediary between the user and the display device 200. The communication interface 130 is used for communicating with the outside, and includes at least one of a WIFI chip, a bluetooth module, NFC, or an alternative module. The user input/output interface 140 includes at least one of a microphone, a touch pad, a sensor, a key, or an alternative module.
Fig. 3 shows a hardware configuration block diagram of the display apparatus 200 according to an exemplary embodiment. The display apparatus 200 as shown in fig. 3 includes at least one of a tuner demodulator 210, a communicator 220, a detector 230, an external device interface 240, a controller 250, a display 260, an audio output interface 270, a memory, a power supply, and a user interface 280. The controller includes a central processor, a video processor, an audio processor, a graphic processor, a RAM, a ROM, and first to nth interfaces for input/output. The display 260 may be at least one of a liquid crystal display, an OLED display, a touch display, and a projection display, and may also be a projection device and a projection screen. The tuner demodulator 210 receives a broadcast television signal through a wired or wireless reception manner, and demodulates an audio/video signal, such as an EPG data signal, from a plurality of wireless or wired broadcast television signals. The detector 230 is used to collect signals of the external environment or interaction with the outside. The controller 250 and the tuner-demodulator 210 may be located in different separate devices, that is, the tuner-demodulator 210 may also be located in an external device of the main device where the controller 250 is located, such as an external set-top box.
The communicator 220 may include a plurality of communication modules, and the communication modules may include one or more of a WIFI module, a bluetooth module, a wired ethernet module, and the like, where the WIFI module, the bluetooth module, and the wired ethernet module may be one or more. For example, the communicator 220 may include at least two wired ethernet modules and one WIFI module. Different communication modules can be used for connecting the same network and can also be used for connecting different networks respectively. Each communication module can independently complete data transmission and can also complete data transmission cooperatively. For example, a plurality of communication modules may be used simultaneously to independently perform data transmission, different communication modules may be used to perform data transmission in different application scenarios, or one communication module may be used to perform partial data transmission, and another communication module or an external device interface may be used to perform another partial data transmission. The manner of data transmission of the various network modules may be controlled by controller 250.
In some embodiments, there may be multiple communication modules (e.g., two wired ethernet modules, two WIFI modules, or one wired ethernet module and one WIFI module, etc.) connected to the home network at the same time for wide area network access. The plurality of communication modules can be respectively and independently configured with different IP addresses, and can respectively and independently complete data transmission and also can respectively transmit partial data, thereby cooperatively completing data transmission.
In other embodiments, at least one communication module (such as a wired ethernet module or a WIFI module) may be connected to the community network for calling an elevator or talkbacking a visible doorbell; alternatively, there may be a communication module (e.g., a bluetooth module) or an external device interface (e.g., USB or HDMI) for connecting other intelligent devices (e.g., intelligent appliances or intelligent sensors), so as to implement data transmission or control between the intelligent devices. The data transmission between the intelligent devices can be realized by using the communication module and the external device interface at the same time, and the application is not limited to this.
In some embodiments, the controller 250 controls the operation of the display device and responds to user operations through various software control programs stored in memory. The controller 250 controls the overall operation of the display apparatus 200. A user may input a user command on a Graphical User Interface (GUI) displayed on the display 260, and the user input interface receives the user input command through the Graphical User Interface (GUI). Alternatively, the user may input the user command by inputting a specific sound or gesture, and the user input interface receives the user input command by recognizing the sound or gesture through the sensor.
In some embodiments, a "user interface" is a media interface for interaction and information exchange between an application or operating system and a user that enables conversion between an internal form of information and a form that is acceptable to the user. A commonly used presentation form of the User Interface is a Graphical User Interface (GUI), which refers to a User Interface related to computer operations and displayed in a graphical manner. It may be an interface element such as an icon, a window, a control, etc. displayed in the display screen of the electronic device, where the control may include at least one of an icon, a button, a menu, a tab, a text box, a dialog box, a status bar, a navigation bar, a Widget, etc. visual interface elements.
Fig. 4 is a schematic diagram of a software configuration in a display device 200 according to one or more embodiments of the present Application, and as shown in fig. 4, the system is divided into four layers, which are, from top to bottom, an Application (Applications) layer (abbreviated as "Application layer"), an Application Framework (Application Framework) layer (abbreviated as "Framework layer"), an android runtime (android runtime) and system library layer (abbreviated as "system runtime library layer"), and a kernel layer. The inner core layer comprises at least one of the following drivers: audio drive, display driver, bluetooth drive, camera drive, WIFI drive, USB drive, HDMI drive, sensor drive (like fingerprint sensor, temperature sensor, pressure sensor etc.) and power drive etc..
Fig. 5 is a schematic diagram illustrating an icon control interface display of an application program in the display device 200 according to one or more embodiments of the present application, as shown in fig. 5, an application layer includes at least one application program that can display a corresponding icon control in a display, for example: the system comprises a live television application icon control, a video on demand application icon control, a media center application icon control, an application center icon control, a game application icon control and the like. The live television application program can provide live television through different signal sources. A video-on-demand application may provide video from different storage sources. Unlike live television applications, video on demand provides a video display from some storage source. The media center application program can provide various applications for playing multimedia contents. The application program center can provide and store various application programs.
In the development of the intelligent terminal technology, a novel intelligent home form is gradually produced, and the novel intelligent home form replaces the household appliances in the traditional form, such as: bright remote controller, magic cube screen Pro, etc. Taking a magic cube screen as an example, the magic cube screen is used as a novel intelligent home and is provided with an intelligent software system, and the intelligent software system can realize various functions and pre-install various application programs, so that rich content services are provided for users.
The embodiment of the application can be applied to various types of display devices (including but not limited to smart televisions, liquid crystal televisions, magic cube screens Pro and the like).
With the continuous upgrade of display equipment, many new functions of the current display equipment have emerged in the aspect of display, and a more professional display effect is provided for users. As one of the most intuitive parameters affecting the display effect, the backlight adjustment has been performed by "automatic backlight adjustment" or the like. When the automatic backlight adjustment function of the display device is started, proper backlight brightness is calculated according to the ambient light intensity obtained by light sensation, and when the set adjustment condition is met, such as the condition that the backlight brightness falls into a certain brightness interval and lasts for more than x seconds, the display device can automatically adjust the current backlight brightness to the target backlight brightness corresponding to the ambient brightness according to the sensed ambient brightness.
However, as for the display device such as the magic cube screen or the magic cube screen Pro, due to its specific structure and application scenario, in general, the display device such as the magic cube screen or the magic cube screen Pro is generally applied as an intelligent home, connected to various intelligent home devices, and controls the on/off operations of some intelligent home devices connected to the display device by controlling the display device; for example, the display device such as the magic cube screen or the magic cube screen Pro is used as a family flat plate and can be used for connecting with a network route in a community local area network, so that the display device can be communicated with a portal machine, a property management machine, a community server and the like; the method can also be used for connecting home network routes communicated with the Internet, including a wired network and a wireless network, so that games, video and audio applications and the like needing to be connected with the Internet can be used. In some application scenes, when the user is close to this type of display device to operate, if indoor main light source is behind the user, because the produced shadow of user's being close to shelters from the display screen, make display device appear the measured data of light sense and descend by a wide margin, the ambient light intensity data that the light sense acquireed can obviously reduce, display device can be with the luminance reduction of being shaded when sensing the light intensity and reducing, and to user's use, when the user is close to the screen and begins to operate, display device's screen darkens suddenly, make user experience not good.
Based on the above, an embodiment of the present application provides a display device, where the display device includes a display screen, and is configured to provide a user operation interface, so that a user completes an operation on the interface; the first sensor is used for acquiring ambient light intensity data around the display device in a preset time period, in some specific implementation modes, the first sensor can be a light sensation measuring sensor or an ambient light sensor, the first sensor can be arranged in the middle above a main screen of the display device and faces different directions, as shown in fig. 6, so that more comprehensive and accurate ambient light data can be acquired, and interferences such as shielding of operators and the like can be avoided; the second sensor is used for detecting the photosensitive state of the display device, and can be built in the display device, and the photosensitive state of the display device can be divided into when a target object is detected and when the target object is not detected, wherein the target object can be a shelter, a shadow or the shelter of a user when the user operates the display device; the change of the light sensing state of the display device includes that the second sensor detects that the display device is currently switched from a state of detecting a target object to a state of not detecting the target object, or switches from the state of not detecting the target object to the state of detecting the target object, and in some specific implementation manners, the second sensor is used for detecting the light sensing state of the display device, and the second sensor may be a distance sensor and detects whether the display device is shielded by the target object or not through the distance sensor; preferably, in the embodiment of the present application, the second sensor mainly aims to recognize that the target object is the user itself, and therefore, any sensor that can provide a function of recognizing whether or not there is a person in front of the display device may be used as the second sensor, for example, an infrared sensor, an asynchronous transceiver based on a TOF ranging method, a camera, and the like.
In some embodiments, the first sensor is configured to collect ambient light intensity data around the display device at a preset time period, where the preset time period may be acquired every second, or may be adjusted according to a requirement of an actual accuracy of light sensation adjustment on the display device, and the embodiment of the present application is not particularly limited. In an embodiment of the application, the first sensor is configured to acquire ambient light intensity data around the display device once per second.
The display device further includes a controller, as shown in fig. 7, which, in the embodiment of the present application, is configured to:
firstly, ambient light intensity data of the display device after the photosensitive state changes are obtained, and the ambient light intensity data are stored in a cache queue.
In some embodiments, the controller is configured to perform the acquiring of ambient light intensity data after the change of the light sensing state of the display device by: after the display device is started, the display device is firstly controlled to be in an automatic backlight adjustment mode, then a preset time period for acquiring the ambient light intensity data around the display device is set, wherein the preset time period can be set by manually controlling keys on the display device, or by operating the display device through a remote controller, or in a background configuration process, the preset time period for acquiring the ambient light intensity data by the first sensor is set. After the setting of the preset time period is completed, monitoring the photosensitive state of the display device, and controlling to acquire the ambient light intensity data around the display device based on the preset time period after the photosensitive state of the display device changes, specifically including acquiring the ambient light intensity data around the display device once per second.
In the embodiment of the present application, as shown in fig. 7, the display device needs to detect whether the automatic backlight adjustment function is turned on, and if the automatic backlight adjustment function is turned on, the display device needs to automatically sense the brightness of the ambient light in the environment where the display device is located by using the ambient light sensor device, and control to obtain the ambient light intensity data around the display device once per second. When the change of the photosensitive state of the display device is detected, if the distance sensor detects that the current state of the display device, in which the target object is not detected, is changed into the state of detecting the target object, the ambient light intensity data of the ambient light sensor after the change of the state is detected is controlled to be acquired, and the acquired ambient light intensity data is stored.
In some embodiments, during the process of storing the ambient light intensity data, the ambient light intensity data is stored in a buffer queue, for example, the ambient light intensity data of a certain time period after the change of the light sensing state of the display device is detected is acquired, the data of the time period is sequentially stored in the buffer queue, the buffer queue is recycled and used for storing the data of the certain time period after the change of the light sensing state, and after new data is generated, the newly acquired data is used for overwriting.
Then, after the ambient light intensity data is acquired and stored in the buffer queue, ambient light intensity baseline data is created based on the ambient light intensity data stored in the buffer queue, and the ambient light intensity baseline data is established according to the ambient light intensity data acquired within a preset time period.
In some embodiments, the controller is further configured to: when the light sensing state of the display device changes, in this embodiment, after the distance sensor detects that the current state of the display device is changed from the state in which the target object is not detected to the state in which the target object is detected, the distance sensor controls to empty all the ambient light intensity data stored in the buffer queue, and then stores the acquired ambient light intensity data after the change of the light sensing state into the buffer queue.
In some embodiments, when the backlight brightness of the display device needs to be adjusted, first determining whether the current processing is the first processing after the state of the undetected target object is converted into the state of the detected target object, and if so, emptying all existing cache data; adding the ambient light intensity data into a cache, judging the number of the currently cached data, if the number reaches a preset number value, not performing backlight adjustment at this time, and keeping the original backlight brightness; and after the buffer area has enough data, the buffer data is used for calculating the brightness adjustment.
In some embodiments, the ambient light intensity data stored in the buffer queue and collected within a preset time period is retrieved, where the preset time period is a set time interval after the change of the light sensing state, for example, the preset time interval is set to be five seconds after the change of the light sensing state, the ambient light intensity data acquired every second within the five seconds is controlled to be stored in the buffer queue, and the ambient light intensity baseline data is established by the ambient light intensity data within the five seconds.
In some embodiments, establishing ambient light intensity baseline data includes processing ambient light intensity data acquired over a preset time period, and in creating the ambient light intensity baseline data, the controller is further configured to: acquiring ambient light intensity data in a preset time period; removing the maximum value and the minimum value in the acquired ambient light intensity data, and calculating the average value of the residual ambient light intensity data; setting the average as the ambient light intensity baseline data; and controlling the display equipment not to adjust the backlight brightness within a preset time period of acquiring the ambient light intensity data.
In some embodiments, taking the five-second time interval as an example, the ambient light intensity data buffered in the five-second time interval is processed, the maximum value and the minimum value in the five buffered data are removed, then the average value of the remaining three data is calculated, and the average value is further used as the ambient light baseline data in the state transition, and the display device is controlled not to adjust the backlight brightness in the five seconds.
Further, the target ambient light intensity data in the buffer queue is called.
In some embodiments, after the distance sensor detects that the current state of the display device is changed from the state in which the target object is not detected to the state in which the target object is detected, the target ambient light intensity data is set as the ambient light intensity data acquired at the next moment after a preset time period, the ambient light intensity data at the moment is the current ambient light intensity data detected by the display device when the display device is shielded by a shadow, and after the ambient light intensity baseline data is established, the brightness adjustment is calculated by using the difference between the current ambient light intensity data and the ambient light intensity baseline data.
And finally, controlling and adjusting the backlight brightness of the display equipment when a first preset condition is met according to the difference value of the ambient light intensity baseline data and the target ambient light intensity data.
In some embodiments, after the distance sensor detects that the display device is currently switched from the state in which the target object is not detected to the state in which the target object is detected, when a preset condition is satisfied, the controller is further configured to, after executing the difference between the ambient light intensity baseline data and the target ambient light intensity data, control to adjust the backlight brightness of the display device: if the difference value is smaller than a brightness adjusting interval, judging that the photosensitive state is not changed, and controlling not to adjust the backlight brightness of the display equipment; if the difference value is not less than a brightness adjusting interval, judging that the photosensitive state changes, recording the photosensitive state change once in an accumulating manner, counting the photosensitive state change times, and controlling the backlight brightness of the display equipment to be adjusted when the photosensitive state change times continuously accumulate to reach a preset value N; the brightness adjusting interval represents a brightness interval range in which backlight brightness corresponding to different environmental brightness preset in the display device by a user falls.
In some embodiments, a unified standard for correspondence between the ambient light brightness and the backlight brightness of the display device is preset in the display device, and the display device may determine the backlight brightness of the corresponding display device according to the unified standard by using the perceived ambient light brightness. The backlight luminance determined by the display device is the actual luminance value, e.g. 100cd/m2、200cd/m2And so on, such a luminance value cannot be directly displayed on the display device, and therefore, in the display device, an actual luminance value of the backlight luminance determined according to the ambient light luminance is also mapped to a value within 0 to 100, i.e., a target backlight luminance value, for easy adjustment and display, as shown in fig. 8.
For example, the display device perceives an ambient light level of 500cd/m2Then the backlight brightness in the display device, which can be determined according to the corresponding unified standard, is 600cd/m2And then mapped into a value a, that is, the target backlight brightness is the value a. The display device may automatically adjust the backlight brightness by the backlight brightness value a.
In some embodiments, the ambient light intensity range is divided into 10 intervals corresponding to 10 levels of backlight brightness, and in a specific application, the degree of backlight adjustment of the display device is determined by calculating the brightness level corresponding to the target data. If the calculated brightness level corresponding to the target data is the same as the brightness level corresponding to the current ambient light intensity data, backlight adjustment of the display device is not needed; if the calculation result falls into different brightness levels, counting is needed; optionally, when counting that 10 consecutive times fall into an adjacent level of the current brightness level, or 2 consecutive times fall into other levels whose distance from the current brightness level is greater than 2, adjusting the backlight brightness to a corresponding brightness level; and when the condition is not met, the adjustment is not carried out, and the original backlight brightness is kept.
In some embodiments, after the distance sensor detects that the display device is currently switched from the state in which the target object is not detected to the state in which the target object is detected, taking the five-second time interval as an example, first calculating ambient light intensity baseline data established by ambient light intensity data corresponding to the five-second time interval, then taking the ambient light intensity data acquired at the next time after a preset time period as the target ambient light intensity data, further calculating a difference between the established ambient light intensity baseline data and the target ambient light intensity data, and controlling and adjusting the backlight brightness of the display device when a preset condition is met.
In some embodiments, the preset condition includes that if the difference is smaller than a brightness adjustment interval, it is determined that the light sensing state is not changed, and the backlight brightness of the display device is not adjusted; if the difference is not less than a brightness adjusting interval, judging that the photosensitive state changes, accumulatively recording the photosensitive state change once, counting the photosensitive state change times, and adding or subtracting a corresponding number of levels of the backlight brightness on the basis of the current brightness level when counting that 5 times of continuous brightness adjusting intervals are greater than one brightness adjusting interval or 3 times of continuous brightness adjusting intervals are greater than more than 2 brightness adjusting intervals, wherein the ambient light intensity baseline data is also correspondingly added or subtracted by the corresponding number of intervals; and when the condition is not met, the adjustment is not carried out, and the original backlight brightness is kept.
In some embodiments, the controller, when performing controlling to adjust the backlight brightness of the display device, comprises: firstly, according to the brightness corresponding relation, determining the target backlight brightness corresponding to the difference value of the ambient light intensity baseline data and the target ambient light intensity data, and then adjusting the current backlight brightness of the display equipment by utilizing the target backlight brightness. Further, the corresponding target backlight brightness is determined by utilizing the ambient light brightness, and then the current backlight brightness is adjusted to the target backlight brightness by the display equipment.
An embodiment of the present application further provides a display device, including: a display; a first sensor configured to acquire ambient light intensity data around the display device at a preset time period; a second sensor configured to detect a light sensing state of the display device; a controller configured to: firstly, acquiring ambient light intensity data of the display equipment after the photosensitive state changes, and storing the ambient light intensity data in a cache queue; secondly, calling target ambient light intensity data in a cache queue; further, calculating the brightness level corresponding to the target environment light intensity data according to the brightness adjusting interval to which the target environment light intensity data belongs; and finally, controlling and adjusting the backlight brightness of the display equipment according to the brightness level when a second preset condition is met.
In some embodiments, after the distance sensor detects that the display device is currently switched from the state of detecting the target object to the state of not detecting the target object, the target ambient light intensity data is the ambient light intensity data acquired at the starting time within the preset time period; the preset time period is a set time interval after the photosensitive state changes.
In some embodiments, the controller is further configured to: when the execution is according to the luminance level, when satisfying the preset condition, control and adjust the luminance of backlight of the display device, including: if the brightness level is consistent with the brightness level corresponding to the display equipment before the photosensitive state changes, judging that the photosensitive state does not change, and controlling not to regulate the backlight brightness of the display equipment; and if the brightness level is not consistent with the brightness level corresponding to the display equipment before the photosensitive state changes, judging that the photosensitive state changes, accumulatively recording the photosensitive state change once, counting the photosensitive state change times, and controlling to regulate the backlight brightness of the display equipment when the photosensitive state change times continuously accumulate to reach a preset value N.
For example, in the specific implementation process, it is first determined whether the current brightness adjustment process is the first process of switching from the state in which the target object is detected to the state in which the target object is not detected, and if so, all existing cache data is emptied; then adding the ambient light intensity data into a cache queue, judging the number of the current cached data, if the number is less than 5, not performing backlight adjustment at this time, and keeping the original backlight brightness; after the buffer area has enough data, that is, the number of the buffered data in the buffer queue is not less than 5, the buffered data before 5 seconds is used for the calculation of the brightness adjustment.
In some embodiments, the ambient light intensity range is divided into 10 intervals, corresponding to 10 levels of backlight brightness; calculating the brightness level corresponding to the data, and if the brightness level is the same as the current brightness level, performing no backlight adjustment; if the calculation result falls into different brightness levels, counting is needed; when counting that 10 times of continuous fall into the adjacent grade of the current brightness grade or 2 times of continuous fall into other grades with the distance larger than 2 from the current brightness grade, adjusting the backlight brightness to the corresponding brightness grade; and when the condition is not met, the adjustment is not carried out, and the original backlight brightness is kept.
In this embodiment, after the display device is currently switched from the state in which the target object is detected to the state in which the target object is not detected, the brightness adjustment is performed by using the cache data of 5 seconds earlier, because the occurrence of the shadow shielding is usually earlier than the detection of the target object by the distance sensor, the delay adjustment can avoid that the backlight brightness is reduced until the device distinguishes whether the target object is shielded or the ambient light is really dark, and thus, after the target object is detected, the adjustment can be performed according to the subsequent actual light change condition on the basis of the brightness in which the shielding does not occur.
Based on the above description of the scheme for implementing the screen backlight brightness control of the display device and the related drawings, the present application further provides a method for controlling the screen backlight brightness, please refer to fig. 9 and fig. 11, where the method includes: s11, acquiring ambient light intensity data of the display device after the photosensitive state changes, and storing the ambient light intensity data in a buffer queue; s12, creating ambient light intensity baseline data based on the ambient light intensity data stored in the cache queue, wherein the ambient light intensity baseline data are created according to the ambient light intensity data collected in a preset time period; s13, retrieving target ambient light intensity data in the buffer queue; and S14, controlling and adjusting the backlight brightness of the display device according to the difference value between the ambient light intensity baseline data and the target ambient light intensity data when a preset condition is met.
Based on the foregoing description of the scheme for controlling the screen backlight brightness of the display device and the related drawings, the present application further provides another method for controlling the screen backlight brightness, please refer to fig. 10 and fig. 12, where the method includes: s21, acquiring ambient light intensity data of the display device after the photosensitive state changes, and storing the ambient light intensity data in a buffer queue; s22, retrieving target ambient light intensity data in the buffer queue; s23, calculating the brightness level corresponding to the target environment light intensity data according to the brightness adjusting interval to which the target environment light intensity data belongs; and S24, controlling and adjusting the backlight brightness of the display equipment when a preset condition is met according to the brightness level.
According to the technical scheme, after the current state of the display device is converted from the state of detecting the target object to the state of not detecting the target object, the ambient light intensity baseline data does not need to be established, the data in the preset time period are put into the cache queue only for delayed use, the initial data of the preset time period are taken at the moment after the preset time period for calculation, difference values do not need to be made, the data are directly used, and the condition that shadow shielding is prior to the sensor to detect the user can be avoided. In the embodiment of the present application, the buffer queue is used circularly, for example, 0 second of data is fetched at 5 seconds, and then is overwritten with new data. After the current state of the display device is converted from the state that the target object is not detected into the state that the target object is detected, the ambient light intensity baseline data needs to be established, the data in the preset time period is put into a cache queue, and the data at the next moment after the preset time period is called for calculation; for example, 5 values are taken from 0 to 4 seconds to establish baseline data, from the 5 th second, the ambient light intensity data acquired every second is subtracted from the previously calculated baseline data to obtain a difference value, and then whether the backlight needs to be adjusted is judged according to the difference value, so that the whole backlight adjusting process is more accurate and is suitable for the surrounding environment.
According to the technical scheme, the technical scheme provided by the embodiment of the application, the ambient light intensity data around the display device after the photosensitive state changes are processed, firstly, the ambient light intensity baseline data are created based on the ambient light intensity data collected in the preset time period and stored in the cache queue, and further, the backlight brightness of the display device is controlled and adjusted according to the ambient light intensity baseline data and the difference value of the adjusted target ambient light intensity data when the preset condition is met, wherein the target ambient light intensity data can be selected according to the actual photosensitive state change, so that the backlight brightness adjusting process of the display device is more accurate, the display device is suitable for different photosensitive state changes, the use requirements of users are met, and the use experience of the users is improved.
In a specific implementation, the present invention further provides a computer storage medium, where the computer storage medium may store a program, and the program may include some or all of the steps in each embodiment of the method for controlling the screen backlight brightness in the display device provided by the present invention when executed. The storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM) or a Random Access Memory (RAM).
Those skilled in the art will readily appreciate that the techniques of the embodiments of the present invention may be implemented as software plus a required general purpose hardware platform. Based on such understanding, the technical solutions in the embodiments of the present invention may be essentially or partially implemented in the form of a software product, which may be stored in a storage medium, such as ROM/RAM, magnetic disk, optical disk, etc., and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method according to the embodiments or some parts of the embodiments.
The same and similar parts in the various embodiments in this specification may be referred to each other. In particular, for the embodiment of the method for controlling the brightness of the screen backlight in the display device, since the method is basically similar to the embodiment of the display device, the description is simple, and for the relevant points, reference may be made to the description in the embodiment of the display device.
The foregoing description, for purposes of explanation, has been presented in conjunction with specific embodiments. However, the foregoing discussion in some embodiments is not intended to be exhaustive or to limit the implementations to the precise forms disclosed above. Many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles and the practical application, to thereby enable others skilled in the art to best utilize the embodiments and various embodiments with various modifications as are suited to the particular use contemplated.
Claims (12)
1. A display device, comprising:
a display;
a first sensor configured to acquire ambient light intensity data around the display device at a preset time period;
a second sensor configured to detect a light sensing state of the display device;
a controller configured to:
acquiring ambient light intensity data of the display equipment after the photosensitive state changes, and storing the ambient light intensity data in a cache queue;
creating ambient light intensity baseline data based on the ambient light intensity data stored in a cache queue, wherein the ambient light intensity baseline data is created according to the ambient light intensity data collected within a preset time period;
calling target ambient light intensity data in a cache queue;
and controlling and adjusting the backlight brightness of the display equipment when a first preset condition is met according to the difference value of the ambient light intensity baseline data and the target ambient light intensity data.
2. The device according to claim 1, wherein the controller is configured to, when performing the acquiring ambient light intensity data after the change of the light sensing state of the display device, include:
after the display equipment is started, controlling the display equipment to be in an automatic backlight adjusting mode, and setting a preset time period for acquiring ambient light intensity data around the display equipment;
and after the photosensitive state of the display equipment is changed, controlling to acquire the ambient light intensity data around the display equipment based on the preset time period.
3. The display device according to claim 1, wherein the target ambient light intensity data is ambient light intensity data acquired at a next time after a preset time period;
the preset time period is a set time interval after the photosensitive state changes.
4. The display device of claim 3, wherein in creating the ambient light intensity baseline data, the controller is further configured to:
acquiring ambient light intensity data in a preset time period;
removing the maximum value and the minimum value in the acquired ambient light intensity data, and calculating the average value of the residual ambient light intensity data;
setting the average as the ambient light intensity baseline data;
and controlling the display equipment not to adjust the backlight brightness within a preset time period of acquiring the ambient light intensity data.
5. The display device of claim 4, wherein in performing the adjusting of the backlight brightness of the display device according to the difference between the ambient light intensity baseline data and the target ambient light intensity data when a preset condition is met, the controller is further configured to:
if the difference value is smaller than a brightness adjusting interval, judging that the photosensitive state is not changed, and controlling not to adjust the backlight brightness of the display equipment;
if the difference value is not less than a brightness adjusting interval, judging that the photosensitive state changes, recording the photosensitive state change once in an accumulating way, counting the photosensitive state change times, and controlling the backlight brightness of the display equipment to be adjusted when the photosensitive state change times continuously accumulate to reach a preset value;
the brightness adjusting interval represents a brightness interval range in which backlight brightness corresponding to different environmental brightness preset in the display device by a user falls.
6. The display device of claim 1, wherein in performing the controlling to adjust a backlight brightness of the display device, the controller is further configured to:
determining target backlight brightness corresponding to the difference value of the ambient light intensity baseline data and the target ambient light intensity data according to the brightness corresponding relation;
and adjusting the current backlight brightness of the display equipment by utilizing the target backlight brightness.
7. The display device of claim 1, wherein the controller is further configured to:
and when the photosensitive state of the display equipment is changed, controlling to empty all the ambient light intensity data stored in the buffer queue.
8. A display device, comprising:
a display;
a first sensor configured to acquire ambient light intensity data around the display device at a preset time period;
a second sensor configured to detect a light sensing state of the display device;
a controller configured to:
acquiring ambient light intensity data of the display equipment after the photosensitive state changes, and storing the ambient light intensity data in a cache queue;
calling target ambient light intensity data in a cache queue;
calculating the brightness level corresponding to the target environment light intensity data according to the brightness adjusting interval to which the target environment light intensity data belongs;
and controlling and adjusting the backlight brightness of the display equipment when a second preset condition is met according to the brightness level.
9. The display device according to claim 8, wherein the target ambient light intensity data is ambient light intensity data acquired at a start time within a preset time period;
the preset time period is a set time interval after the photosensitive state changes.
10. The display device according to claim 8, wherein when performing controlling to adjust the backlight brightness of the display device according to the brightness level when a preset condition is satisfied, the controller is further configured to:
if the brightness level is consistent with the brightness level corresponding to the display equipment before the photosensitive state changes, judging that the photosensitive state does not change, and controlling not to regulate the backlight brightness of the display equipment;
and if the brightness level is not consistent with the brightness level corresponding to the display equipment before the photosensitive state changes, judging that the photosensitive state changes, accumulatively recording the photosensitive state change once, counting the photosensitive state change times, and controlling to regulate the backlight brightness of the display equipment when the photosensitive state change times are continuously accumulated to reach a preset value.
11. A method for controlling the brightness of a screen backlight is characterized by comprising the following steps:
acquiring ambient light intensity data of the display equipment after the photosensitive state changes, and storing the ambient light intensity data in a cache queue;
creating ambient light intensity baseline data based on the ambient light intensity data stored in a cache queue, wherein the ambient light intensity baseline data is created according to the ambient light intensity data collected within a preset time period;
calling target ambient light intensity data in a cache queue;
and controlling and adjusting the backlight brightness of the display equipment when a first preset condition is met according to the difference value of the ambient light intensity baseline data and the target ambient light intensity data.
12. A method for controlling the brightness of a screen backlight is characterized by comprising the following steps:
acquiring ambient light intensity data of the display equipment after the photosensitive state changes, and storing the ambient light intensity data in a cache queue;
calling target ambient light intensity data in a cache queue;
calculating the brightness level corresponding to the target environment light intensity data according to the brightness adjusting interval to which the target environment light intensity data belongs;
and controlling and adjusting the backlight brightness of the display equipment when a second preset condition is met according to the brightness level.
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